ASLR: Address Space Layout Randomization in Cybersecurity
Two syllables. Sometimes 'A-S-L-R' letter by letter.
ASLR stands for Address Space Layout Randomization. Address Space Layout Randomization is an OS-level defense that randomizes the memory addresses of code, stack, heap, and libraries each time a program runs. ASLR makes it harder for attackers to predict where specific instructions or data reside in memory.
How ASLR Is Used in Cybersecurity
Penetration testers assess whether ASLR is enabled and attempt to bypass it using information leaks during exploit development. Security engineers verify ASLR is active on production systems and that compiled binaries support position-independent execution. Security architects include ASLR in baseline hardening standards for servers and endpoints.
Cybersecurity Roles That Work with ASLR
Related Cybersecurity Acronyms
Frequently asked questions
What does ASLR stand for?
ASLR stands for Address Space Layout Randomization. Address Space Layout Randomization is an OS-level defense that randomizes the memory addresses of code, stack, heap, and libraries each time a program runs. ASLR makes it harder for attackers to predict where specific instructions or data reside in memory.
What is ASLR used for in cybersecurity?
Penetration testers assess whether ASLR is enabled and attempt to bypass it using information leaks during exploit development. Security engineers verify ASLR is active on production systems and that compiled binaries support position-independent execution. Security architects include ASLR in baseline hardening standards for servers and endpoints.
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